合成地

H3PW6Mo6O40/TiO2 was used as the catalyst in the synthesis of cyclohexanone ethylene ketal. The effects of varying the n:n ratio, catalyst dosage and reaction time on the yield were investigated.

以H3PW6Mo6O40/TiO2为催化剂，对以环己酮与乙二醇为原料合成环己酮乙二醇缩酮的反应条件进行了研究，较系统地研究了酮醇物质的量比、催化剂用量、反应时间对收率的影响。

Cyclohexanone ethylene ketal was synthesized from cyclohexanone and glycol in the presence of H3PW12O40/MCM-48. The factors influencing the synthesis of molar ratio of glycol to cyclohexanone, the quantity of catalyst and the reaction time were discussed and the best conditions were found out.

报道了以分子筛MCM-48负载磷钨酸(H3PW12O40/MCM-48)为催化剂，通过环己酮和乙二醇反应合成了环己嗣乙二醇缩酮，探讨了H3PW12O40/MCM-48对缩峒反应的催化活性，较系统地研究了酗醇物质的量比，催化剂用量，反应时间诸因素对产品收率的影响。

To localize the functional positions of biomolecules in ciliates cell, we constructed a macronuclear artificial chromosome containing a gene encoding red fluorescence protein based on the structural characteristics of ciliates chromosome.

为了能够有效地分析生物大分子在该细胞中的功能作用位点，本研究根据该生物染色体结构的特征，构建了含有红色荧光蛋白的大核人工染色体EoMAC_R，并与之前构建的含绿色荧光的大核染色体EoMAC_G一起，对蛋白质合成终止有关的3个重要因子核糖体大亚基蛋白L11、多肽链释放因子eRF1和eRF3在八肋游仆虫细胞中进行了荧光共定位分析。

The study is possible for experimenters to offer theoretic direction while developing new type quercetin metal complex with higher activity antioxidants. At the same time, the study offer theoretical foundation that quercetin can be used as a kind of antidote for superfluous meatal ion in body.

本文通过对槲皮素金属配合物的合成、生物活性及其量子化学的较深入地研究，为进一步寻找高效、低毒的抗氧化性槲皮素配合物提供了一定的参考价值，同时为槲皮素可作为体内过多金属离子的解毒剂提供了依据。

This paper focuses on the stability study of Rhizopus oryzae IFO4697 when used for the methanolysis of renewable oils for biodiesel production. The results showed that water content was important for achieving high catalytic activity and good stability of the biocatalyst. The optimum water content was found to be 5%-15%. Both particle size and desiccation methods showed no obvious effect on the stability of the biocatalyst. With GA cross-linking pretreatment, the stability of the biocatalyst could be improved significantly. When Rhizopus oryzae IFO4697 repeatedly used for next batch reaction, direct vacuum filtration was found to be a good way for the maintenance of good stability of the biocatalyst.

本实验对固定化全细胞Rhizopus oryzae IFO4697催化植物油脂合成生物柴油的稳定性进行了系统地研究，结果表明：反应体系水含量对于全细胞催化剂的反应活性和催化稳定性有重要影响， 5%~15%含水量适宜；研究范围内，载体粒度及干燥方式对稳定性影响不显著；经过戊二醛交联后，全细胞催化油脂甲醇解反应的稳定性显著提高， 1200 h反应后，仍然可以保持75%的生物柴油得率；真空抽滤直接回用的方式有利于稳定性的保持。

The results show that monoclinic sulfur nanoparticles was successfully synthesized by liquid phase precipitation method.

结果表明，用液相沉淀法成功地合成了颗粒均匀、粒径50～80 nm 的球形单斜相硫纳米粒子。

Finally, in multinuclear macrocyclic polyamine derivatives, we found that cyclen-based oligomers form polymer complex with DNA, thus protect DNA from enzymatic degradation efficiently.

在多核大环多胺方面，我们合成了基于大环多胺的寡聚物，研究发现该类物质可与DNA形成复合物，从而有效地保护DNA免于酶解。

Linear dimerization of isoprene to form myrcene ;2. Synthesis of Unsaturated Cyclothioethers byCycloaddition Reactions of Myrcene;3. The traditional synthesis is by the way of Diels-Alder reaction of myrcene with acrolein over Lewis acid catalysts in organic solvent.

二烷基咪唑或烷基吡啶卤化物与ZnCl2 构成一类新型的具有Lewis酸性的离子液体，以其为催化剂和反应介质，通过月桂烯与丙烯醛的Diels Alder反应高区域选择性地合成了对位柑菁醛。

In this work, the horizontally oriented single-walled carbon nanotubes networks deposited directly on Si wafer substrate by the buffer layer-assisted microwave plasma chemical vapor deposition method were successfully developed, using CH4, C2H2 and H2 as the source gases, and Fe and Nias catalyst materials.

本研究利用缓冲层材料辅助微波电浆化学气相沉积法，以甲烷(CH4)、乙炔(C2H2)与氢气(H2)为反应气体，镍与铁为触媒，成功地开发出在矽晶片上直接合成水平方向网状单壁碳奈米管。

Niobic acid as a solid catalyst can be directly applied in the hydrolysis, esterification, condensation and alkylation reaction etc.

铌酸可直接作为固体催化剂，应用于水解、酯化、缩合、烷基化等反应中；铌酸也作为载体负载金属，应用于F-T合成、氧化反应和加氢等反应中；含铌化合物也可作为负载型催化剂，负载到不同类型的载体上；含铌化合物也作为助剂或光催化剂，广泛地应用于催化多种化学反应。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失